I smell something that smell like burnt rubber coming from dodge caravan

Pop the hood and see if a pully is binding up or wobbling , what ever it's for may be ready to quit ,

when the engine's cold, so is the serpentine belt. It's likely slipping. when the engine warms, the belt grabs. Your belt is just worn out. This is a twenty-two year old car. You need to keep up with these little problems or you won't have the car long.

coming from the tailpipe, it might be the catalytic converter has lost its shield and is burning up the car.

Hey, GuruL23FD, you made a thousand reputation points. Now, just 176 more easy payments and you'll be up with me. Congrats!